import sys
readline = sys.stdin.readline

X = int(readline())

limit = 600
rank = 8
for i in range(8):
  if X < limit:
    print(rank)
    break
  limit += 200
  rank -= 1 import sys sys readline = sys.stdin.readline readline sys.stdin.readline sys.stdin sys stdin readline X = int(readline()) X int(readline()) int readline() readline limit = 600 limit 600 rank = 8 rank 8 for i in range(8):
  if X < limit:
    print(rank)
    break
  limit += 200
  rank -= 1 i range(8) range 8 if X < limit:
    print(rank)
    break
   X < limit X limit print(rank) print rank break limit += 200 limit 200 rank -= 1 rank 1 limit = 600 600 limit rank -= 1 1 rank X = int(readline()) int(readline()) X limit += 200 200 limit readline = sys.stdin.readline sys.stdin.readline readline rank = 8 8 rank
import sys
readline = sys.stdin.readline

X = int(readline())

limit = 600
rank = 8
for i in range(8):
  if X < limit:
    print(rank)
    break
  limit += 200
  rank -= 1